linux-kernel - [PATCH 3.16 341/366] MIPS: asm: compiler: Add new macros to set ISA and arch asm annotations

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Date:   Sun, 11 Nov 2018 19:49:05 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Markos Chandras" <markos.chandras@...tec.com>
Subject: [PATCH 3.16 341/366] MIPS: asm: compiler: Add new macros to set
 ISA and arch asm annotations

3.16.61-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Markos Chandras <markos.chandras@...tec.com>

commit be5136988e25ae0dc8379fcb937efc63d87aba9e upstream.

There are certain places where the code uses .set mips32 or .set mips64
or .set arch=r4000. In preparation of MIPS R6 support, and in order to
use as less #ifdefs as possible, we define new macros to set similar
annotations for MIPS R6.

Signed-off-by: Markos Chandras <markos.chandras@...tec.com>
[bwh: Backported to 3.16: We don't support MIPS R6 but I have applied a
 commit that uses MIPS_ISA_LEVEL_RAW.  Add the R2 definitions only.]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/mips/include/asm/compiler.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

--- a/arch/mips/include/asm/compiler.h
+++ b/arch/mips/include/asm/compiler.h
@@ -16,4 +16,10 @@
 #define GCC_REG_ACCUM "accum"
 #endif
 
+/* MIPS64 is a superset of MIPS32 */
+#define MIPS_ISA_LEVEL "mips64r2"
+#define MIPS_ISA_ARCH_LEVEL "arch=r4000"
+#define MIPS_ISA_LEVEL_RAW mips64r2
+#define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW
+
 #endif /* _ASM_COMPILER_H */